Stepper chassis for terrain-going vehicles



FIG. 1 is an enlarged top and side perspective view of a stepper chassis for terrain-going vehicles showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view taken from the right of FIG. 1;

FIG. 4 is a top plan view thereof;

FIG. 5 is an end elevational view taken from the left of FIG. 3;

FIG. 6 is an end elevational view taken from the right of FIG. 3. 

The ornamental design for a stepper chassis for terrain-going vehicles, as shown. 